Perform the indicated operation.25 - 12

A. 13
B. 13 
C. 65 
D. 37


Answer: A

Mathematics

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Graph the quadratic function. Determine the vertex, find the equation of the axis of symmetry, find any x- and y-intercepts, and state the domain and range in interval notation.f(x) = -7x2 - 2x - 12

A. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 

B. vertex: 
axis of symmetry: x = 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 

C. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: 12
domain: (-?, ?); range: 

D. vertex: 
axis of symmetry: x = - 
x-intercept: none; y-intercept: -12
domain: (-?, ?); range: 

Mathematics

Find the ratio of net income after taxes to average owner's equity. Round to the nearest tenth of a percent.Owner's equity at beginning of year: $614,000. Owner's equity at end of year: $2,058,000. Net income after taxes: $316,500.

A. 15.4% B. 51.6% C. 23.7% D. 51.5%

Mathematics

Solve the problem. Assume projectile is ideal, launch angle is measured from the horizontal, and launch is over a horizontal surface, unless stated otherwise.A sprung gun at ground level fires a tennis ball at an angle of 46°. The ball lands 16 m away. What was the ball's initial speed? Round answer to the nearest tenth.

A. 156.9 m/sec B. 4.0 m/sec C. 14.8 m/sec D. 12.5 m/sec

Mathematics

Find a formula for the slope of the graph of  at the point . Then use it to find the slope at the given point.

?

?

A. ?

?


B.  

?


C.  

?


D.  

?


E.  

?


Mathematics